A sign-in page and a list of items, with three locator tests that each change the list in their own copy of the running app.
Run
Use macOS on Apple Silicon or Linux with /dev/kvm, and Node 22.22.3+,
24.8+, or 26+. From this folder:
npm install
npm run test:e2eThe first run pulls the Playwright Ubuntu image, so it takes longer.
No account or API key is needed. Results are in .e2e/report.json.
To try the app on your computer, npm start serves it at
http://localhost:3000. Sign in as qa@example.com with the password smol.
What smol machines change
e2e.config.ts sets the browser to smol() from
@e2e-dev/smol. Each
worker boots one microVM with Chromium, copies this folder in, and starts the
app beside the browser. prepare signs in once on that machine. Every test
attempt, a retry included, then runs in a copy-on-write branch of the running
machine. The branch has its own browser, its own running app, and its own
items.json, and it is deleted when the attempt ends.
So each test in tests/ deletes, adds, or renames items and still
starts from the three seeded ones, on two workers and in any order. With
scope: 'worker', the attempts on a worker share one machine, and a test
after the first would see the list the first one left.
Last checked with e2e 0.21.3, @e2e-dev/web 0.15.3, @e2e-dev/smol 0.1.2, smolmachines 1.32.2, and Node 26.
